Photophysical properties of microencapsulated phthalocyanines

Lipophilic substituted zinc(II) phthalocyanines: 2,3,9,10,16,17,23,24- octakis[(N,N-dimethylaminoethylsulfanyl)]phthalocyaninatozinc(II) (S1) and tetrakis(N,N-dibutylaminoethoxy)phthalocyaninatozinc(II) (3) Were incorporated into soybean L-α-phosphatidylcholine (SPC) liposomes of 100 nm diameter. Li...

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Detalles Bibliográficos
Autores principales: Diz, V.E., Gauna, G.A., Strassert, C.A., Awruch, J., Dicelio, L.E.
Formato: JOUR
Materias:
Fluorescence
Liposomes
Singlet oxygen
Zinc(II) phthalocyanine
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10884246_v14_n3_p278_Diz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Lipophilic substituted zinc(II) phthalocyanines: 2,3,9,10,16,17,23,24- octakis[(N,N-dimethylaminoethylsulfanyl)]phthalocyaninatozinc(II) (S1) and tetrakis(N,N-dibutylaminoethoxy)phthalocyaninatozinc(II) (3) Were incorporated into soybean L-α-phosphatidylcholine (SPC) liposomes of 100 nm diameter. Liposomes were characterized by static light scattering (SLS), transmission electronic microscopy (TEM), and differential scanning calorimetry. The fluorescence quantum yield and singlet molecular oxygen production of 3 are ΦF = 0.15 and Φ = 0.24, respectively, whereas the same photophysical parameters for S1 are ΦF = 0.13 and Φ = 0.51. Higher values of ΦF and Φ are obtained in organic solvent for both dyes. Synthesis of compound 3 has also been reported. © 2010 World Scientific Publishing Company.

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